The answer is D. Firstly you divide 100 by 2 giving you 50 you add it with 40 divide by 2 which is 70 and 2 divided by 2 is 1 add 1 plus 70 you get 71. 142 divided by 2 is 71. There you go
3i (- 1 + 2i) Remove the brackets. 3i (-1) + (2i)(3i) Look at the first set of brackets around the -1 -3i + 6i^2 But i^2 = - 1[ I hope that's the way you are using it] -3i - 6 or -6 - 3i or -3(2 - i) <<<<< answer
